Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Paul J. G. Goulet"'
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 35(19)
Raman microspectroscopy was employed in this work to study the degradation of a polyanhydride network polymer synthesized from 4-pentenoic anhydride and pentaerythritol tetrakis(3-mercaptopropionate) monomers in order to illustrate the utility of thi
Autor:
Igor O. Osorio-Román, Ana Riveros, Monica Ramírez-Maureira, Paul J. G. Goulet, C Victor Vargas
Publikováno v:
Materials Chemistry and Physics. 151:351-356
We report shell-isolated nanoparticle-enhanced fluorescence (SHINEF) of CdTe quantum dots. Enhanced spectra are obtained after Ag SHINs were spread onto homogenous CdTe quantum dot/polyelectrolyte layer-by-layer (LbL) films on quartz. The thin silica
Autor:
Azar Abidnejad, Elham Honarvarfard, Arvind Sreeram, Dipankar Roy, Paul J. G. Goulet, M. C. Turk, Stephan J. DeLuca, Sitaraman Krishnan
Publikováno v:
RSC Advances. 5:88425-88435
Polymer films composed of a polyacetylene-like conjugated polymer and 1-propyl-3-methylimidazolium iodide ionic liquid (IL) were synthesized using a ‘one-pot’ hydroiodic acid catalyzed thermal dehydration of poly(vinyl alcohol) (PVA) precursor po
Publikováno v:
The Journal of Physical Chemistry C. 116:14096-14102
The rapid, stoichiometric oxidation of gold nanoparticles by tetraalkylammonium and tetraalkylphosphonium Au(III) complexes in toluene is reported here. Nanoparticle oxidation proceeds via a comproportionation mechanism and generates stable Au(I) com
Publikováno v:
Chemistry of Materials. 23:4954-4959
The facile fabrication of free-standing conductive Au(0) and Ag(0) nanostructured monoliths via the chemical reduction of sheets composed respectively of AuCl(n-butylamine) nanofibers and aggregated AgCl nanocubes is reported. This preparation can be
Autor:
Paul J. G. Goulet, Ricardo Aroca
Publikováno v:
Analytical Chemistry. 79:2728-2734
Here, it is demonstrated that similar chemical species within a multicomponent sample can be distinguished, down to the single-molecule level, by means of their surface-enhanced vibrational fingerprints. Surface-enhanced resonance Raman scattering sp
Autor:
Ricardo Aroca, David S. dos Santos, Osvaldo N. Oliveira, Paul J. G. Goulet, Ramon A. Alvarez-Puebla
Publikováno v:
Langmuir. 21:5576-5581
In this paper, the fabrication, characterization, and application of unique layer-by-layer (LBL) films of dendrimers and metallic nanoparticles is reported. Silver nanoparticles (d = approximately 20 nm) are produced in solution by sodium citrate red
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 256:129-135
Humic substances (HS) are the most important source of organic carbon in the environment. Their colloidal character and high surface functionality make them excellent adsorbents, possessing a superior capacity for the retention of ionic and molecular
Publikováno v:
Surface Science. 575:136-146
The solubility of humic substances (HS) increases with pH. However, when in the presence of appropriate concentrations of transition metals in solution, soluble HS flocculate as a consequence of the aggregation processes promoted by the metallic ions
Publikováno v:
Synthetic Metals. 148:31-35
Langmuir and Langmuir–Blodgett (LB) films of mixed titanyl(IV) phthalocyanine (TiOPc)–bis (neopentylimido)perylene (BNPTCD) were fabricated and characterized. The surface pressure–area isotherms (π–A) of the mixed Langmuir films were recorde